forked from KolibriOS/kolibrios
338 lines
9.9 KiB
C
338 lines
9.9 KiB
C
/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2012 Intel Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is University of Southern
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* California.
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*
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* Contributor(s):
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* Chris Wilson <chris@chris-wilson.co.uk>
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*/
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#include "cairoint.h"
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#include "cairo-compositor-private.h"
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#include "cairo-clip-private.h"
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#include "cairo-pattern-private.h"
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#include "cairo-surface-private.h"
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#include "cairo-surface-offset-private.h"
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static cairo_int_status_t
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_cairo_shape_mask_compositor_stroke (const cairo_compositor_t *_compositor,
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cairo_composite_rectangles_t *extents,
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const cairo_path_fixed_t *path,
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const cairo_stroke_style_t *style,
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const cairo_matrix_t *ctm,
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const cairo_matrix_t *ctm_inverse,
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double tolerance,
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cairo_antialias_t antialias)
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{
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cairo_surface_t *mask;
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cairo_surface_pattern_t pattern;
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cairo_int_status_t status;
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cairo_clip_t *clip;
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if (! extents->is_bounded)
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return CAIRO_INT_STATUS_UNSUPPORTED;
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TRACE ((stderr, "%s\n", __FUNCTION__));
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mask = _cairo_surface_create_similar_scratch (extents->surface,
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CAIRO_CONTENT_ALPHA,
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extents->bounded.width,
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extents->bounded.height);
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if (unlikely (mask->status))
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return mask->status;
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clip = extents->clip;
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if (! _cairo_clip_is_region (clip))
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clip = _cairo_clip_copy_region (clip);
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if (! mask->is_clear) {
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status = _cairo_surface_offset_paint (mask,
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extents->bounded.x,
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extents->bounded.y,
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CAIRO_OPERATOR_CLEAR,
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&_cairo_pattern_clear.base,
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clip);
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if (unlikely (status))
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goto error;
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}
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status = _cairo_surface_offset_stroke (mask,
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extents->bounded.x,
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extents->bounded.y,
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CAIRO_OPERATOR_ADD,
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&_cairo_pattern_white.base,
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path, style, ctm, ctm_inverse,
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tolerance, antialias,
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clip);
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if (unlikely (status))
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goto error;
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if (clip != extents->clip) {
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status = _cairo_clip_combine_with_surface (extents->clip, mask,
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extents->bounded.x,
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extents->bounded.y);
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if (unlikely (status))
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goto error;
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}
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_cairo_pattern_init_for_surface (&pattern, mask);
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cairo_matrix_init_translate (&pattern.base.matrix,
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-extents->bounded.x,
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-extents->bounded.y);
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pattern.base.filter = CAIRO_FILTER_NEAREST;
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pattern.base.extend = CAIRO_EXTEND_NONE;
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if (extents->op == CAIRO_OPERATOR_SOURCE) {
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status = _cairo_surface_mask (extents->surface,
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CAIRO_OPERATOR_DEST_OUT,
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&_cairo_pattern_white.base,
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&pattern.base,
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clip);
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if ((status == CAIRO_INT_STATUS_SUCCESS)) {
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status = _cairo_surface_mask (extents->surface,
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CAIRO_OPERATOR_ADD,
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&extents->source_pattern.base,
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&pattern.base,
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clip);
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}
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} else {
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status = _cairo_surface_mask (extents->surface,
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extents->op,
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&extents->source_pattern.base,
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&pattern.base,
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clip);
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}
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_cairo_pattern_fini (&pattern.base);
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error:
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cairo_surface_destroy (mask);
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if (clip != extents->clip)
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_cairo_clip_destroy (clip);
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return status;
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}
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static cairo_int_status_t
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_cairo_shape_mask_compositor_fill (const cairo_compositor_t *_compositor,
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cairo_composite_rectangles_t *extents,
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const cairo_path_fixed_t *path,
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cairo_fill_rule_t fill_rule,
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double tolerance,
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cairo_antialias_t antialias)
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{
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cairo_surface_t *mask;
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cairo_surface_pattern_t pattern;
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cairo_int_status_t status;
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cairo_clip_t *clip;
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TRACE ((stderr, "%s\n", __FUNCTION__));
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if (! extents->is_bounded)
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return CAIRO_INT_STATUS_UNSUPPORTED;
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mask = _cairo_surface_create_similar_scratch (extents->surface,
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CAIRO_CONTENT_ALPHA,
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extents->bounded.width,
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extents->bounded.height);
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if (unlikely (mask->status))
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return mask->status;
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clip = extents->clip;
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if (! _cairo_clip_is_region (clip))
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clip = _cairo_clip_copy_region (clip);
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if (! mask->is_clear) {
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status = _cairo_surface_offset_paint (mask,
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extents->bounded.x,
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extents->bounded.y,
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CAIRO_OPERATOR_CLEAR,
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&_cairo_pattern_clear.base,
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clip);
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if (unlikely (status))
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goto error;
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}
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status = _cairo_surface_offset_fill (mask,
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extents->bounded.x,
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extents->bounded.y,
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CAIRO_OPERATOR_ADD,
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&_cairo_pattern_white.base,
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path, fill_rule, tolerance, antialias,
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clip);
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if (unlikely (status))
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goto error;
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if (clip != extents->clip) {
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status = _cairo_clip_combine_with_surface (extents->clip, mask,
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extents->bounded.x,
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extents->bounded.y);
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if (unlikely (status))
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goto error;
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}
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_cairo_pattern_init_for_surface (&pattern, mask);
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cairo_matrix_init_translate (&pattern.base.matrix,
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-extents->bounded.x,
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-extents->bounded.y);
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pattern.base.filter = CAIRO_FILTER_NEAREST;
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pattern.base.extend = CAIRO_EXTEND_NONE;
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if (extents->op == CAIRO_OPERATOR_SOURCE) {
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status = _cairo_surface_mask (extents->surface,
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CAIRO_OPERATOR_DEST_OUT,
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&_cairo_pattern_white.base,
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&pattern.base,
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clip);
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if ((status == CAIRO_INT_STATUS_SUCCESS)) {
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status = _cairo_surface_mask (extents->surface,
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CAIRO_OPERATOR_ADD,
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&extents->source_pattern.base,
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&pattern.base,
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clip);
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}
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} else {
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status = _cairo_surface_mask (extents->surface,
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extents->op,
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&extents->source_pattern.base,
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&pattern.base,
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clip);
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}
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_cairo_pattern_fini (&pattern.base);
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error:
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if (clip != extents->clip)
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_cairo_clip_destroy (clip);
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cairo_surface_destroy (mask);
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return status;
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}
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static cairo_int_status_t
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_cairo_shape_mask_compositor_glyphs (const cairo_compositor_t *_compositor,
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cairo_composite_rectangles_t *extents,
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cairo_scaled_font_t *scaled_font,
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cairo_glyph_t *glyphs,
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int num_glyphs,
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cairo_bool_t overlap)
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{
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cairo_surface_t *mask;
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cairo_surface_pattern_t pattern;
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cairo_int_status_t status;
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cairo_clip_t *clip;
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if (! extents->is_bounded)
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return CAIRO_INT_STATUS_UNSUPPORTED;
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TRACE ((stderr, "%s\n", __FUNCTION__));
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mask = _cairo_surface_create_similar_scratch (extents->surface,
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CAIRO_CONTENT_ALPHA,
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extents->bounded.width,
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extents->bounded.height);
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if (unlikely (mask->status))
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return mask->status;
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clip = extents->clip;
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if (! _cairo_clip_is_region (clip))
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clip = _cairo_clip_copy_region (clip);
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if (! mask->is_clear) {
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status = _cairo_surface_offset_paint (mask,
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extents->bounded.x,
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extents->bounded.y,
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CAIRO_OPERATOR_CLEAR,
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&_cairo_pattern_clear.base,
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clip);
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if (unlikely (status))
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goto error;
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}
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status = _cairo_surface_offset_glyphs (mask,
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extents->bounded.x,
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extents->bounded.y,
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CAIRO_OPERATOR_ADD,
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&_cairo_pattern_white.base,
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scaled_font, glyphs, num_glyphs,
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clip);
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if (unlikely (status))
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goto error;
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if (clip != extents->clip) {
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status = _cairo_clip_combine_with_surface (extents->clip, mask,
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extents->bounded.x,
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extents->bounded.y);
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if (unlikely (status))
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goto error;
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}
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_cairo_pattern_init_for_surface (&pattern, mask);
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cairo_matrix_init_translate (&pattern.base.matrix,
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-extents->bounded.x,
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-extents->bounded.y);
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pattern.base.filter = CAIRO_FILTER_NEAREST;
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pattern.base.extend = CAIRO_EXTEND_NONE;
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if (extents->op == CAIRO_OPERATOR_SOURCE) {
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status = _cairo_surface_mask (extents->surface,
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CAIRO_OPERATOR_DEST_OUT,
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&_cairo_pattern_white.base,
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&pattern.base,
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clip);
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if ((status == CAIRO_INT_STATUS_SUCCESS)) {
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status = _cairo_surface_mask (extents->surface,
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CAIRO_OPERATOR_ADD,
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&extents->source_pattern.base,
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&pattern.base,
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clip);
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}
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} else {
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status = _cairo_surface_mask (extents->surface,
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extents->op,
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&extents->source_pattern.base,
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&pattern.base,
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clip);
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}
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_cairo_pattern_fini (&pattern.base);
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error:
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if (clip != extents->clip)
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_cairo_clip_destroy (clip);
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cairo_surface_destroy (mask);
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return status;
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}
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void
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_cairo_shape_mask_compositor_init (cairo_compositor_t *compositor,
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const cairo_compositor_t *delegate)
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{
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compositor->delegate = delegate;
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compositor->paint = NULL;
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compositor->mask = NULL;
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compositor->fill = _cairo_shape_mask_compositor_fill;
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compositor->stroke = _cairo_shape_mask_compositor_stroke;
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compositor->glyphs = _cairo_shape_mask_compositor_glyphs;
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}
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